<!-- 父级组件:控制除登录页以外所有页面的共有头部与左侧菜单栏 -->
<template>
  <div style="display: flex;">
    <div :style="{width:(isCollapse ? '64px' : '208px')}">
      <el-menu
          background-color="#3C82F5"
          style="width: 100%;height: 100vh" text-color="#fff"
          active-text-color="#ff0"
          unique-opened:collapse="isCollapse" router
          :collapse="isCollapse"
          :collapse-transition="false"
      >
<!--        左侧菜单栏顶部条-->
        <el-row>
          <el-col :span="2"></el-col>
          <el-col :span="7" style="padding-left: 8px">
          <el-avatar src="/imgs/admin/logo.png" style="width: 35px;height: 35px"></el-avatar>
          </el-col>
          <el-col :span="isCollapse ? 0:13">
            <span style="color: #ffffff;font-weight: bold;position: relative;top: 8px;left: 2px;">
               智慧车辆
            </span>
          </el-col>
        </el-row>

      <!-- 左侧菜单栏 -->
        <el-sub-menu index="1">
          <template #title>
            <el-icon style="font-size:21px;"><User/></el-icon>
            <span>用户管理</span>
          </template>
          <el-menu-item index="/user">用户列表</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="2">
          <template #title>
            <el-icon style="font-size:21px;"><Van/></el-icon>
            <span>车辆管理</span>
          </template>
          <el-menu-item index="/vehicle">车辆列表</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="3">
          <template #title>
            <el-icon style="font-size:21px;"><Location/></el-icon>
            <span>围栏管理</span>
          </template>
          <el-menu-item index="/geofence">电子围栏</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="4">
          <template #title>
            <el-icon style="font-size:21px;"><Place/></el-icon>
            <span>调度管理</span>
          </template>
          <el-menu-item index="/application">用车申请</el-menu-item>
          <el-menu-item index="/audit">用车审批</el-menu-item>
          <el-menu-item index="/distribute">车辆分配</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="5">
          <template #title>
            <el-icon style="font-size:21px;"><MessageBox/></el-icon>
            <span>字典管理</span>
          </template>
          <el-menu-item index="/dict">字典列表</el-menu-item>
        </el-sub-menu>
      </el-menu>
    </div>
    <div :style="{width:(isCollapse ? 'calc(100% - 64px)' : 'calc(100% - 208px)')}">
      <!--  右侧顶部条 -->
      <el-header style="height: 10vh;background-color: #ffffff;padding-top: 22px">
        <el-row>
          <el-col :span="18">
            <el-icon @click="changeCllopsed"   style="font-size: 21px"><Expand/></el-icon>
          </el-col>
          <el-col :span="6" style="position: relative">
            <el-dropdown trigger="click" style="position: absolute;right: 20px;">
              <span style="font-size:19px;font-weight: bold;" >
              {{user.username}}
                <el-icon >
                  <arrow-down />
                </el-icon>
              </span>
              <template #dropdown>
                <el-dropdown-menu>
                  <el-dropdown-item @click="logout">退出登录</el-dropdown-item>
                </el-dropdown-menu>
              </template>
            </el-dropdown>
          </el-col>
        </el-row>
<!--        面包屑导航-->
        <el-breadcrumb separator="/" style="position:relative;">
          <el-breadcrumb-item>首页</el-breadcrumb-item>
          <el-breadcrumb-item v-for="item in breadcrumb">{{item}}</el-breadcrumb-item>

        </el-breadcrumb>
      </el-header>
        <el-main style="height: 90vh;padding: 0;overflow-y: auto;">
          <!--  右侧可变区域 -->
          <router-view/>
        </el-main>



    </div>
  </div>
</template>

<script setup>
import {onMounted, ref, watch} from "vue";
import router from "@/router";
import {useRoute, useRouter} from "vue-router";


const user=ref(getUser());

const logout=()=>{
  if(confirm("确定要退出登录吗？")){
    localStorage.removeItem("user")
    window.location.href="/login"
    user.value=''
  }


}

//定义变量用来控制左侧菜单栏是否折叠
const changeCllopsed=()=>{
  isCollapse.value=!isCollapse.value;
}
const isCollapse = ref(false);
const breadcrumb=ref([])
let map={
  '/user':['用户管理','用户列表']
  ,'/vehicle':['车辆管理','车辆列表']
  ,'/geofence':['围栏管理','电子围栏']
  ,'/application':['调度管理','申请列表']
  ,'/audit':['调度管理','调度审核']
  ,'/distribute':['调度管理','用车分配']
  ,'/dict':['字典管理','字典列表']
}
const route = useRoute();
const updateBreadcrumb = () => {
  const path = route.path;
  const breadcrumbData = map[path];
  breadcrumb.value = breadcrumbData || [];
}

// 使用watch监听路由变化，替代错误的路由守卫
watch(route, () => {
  updateBreadcrumb();
});

onMounted(() => {
  updateBreadcrumb();
})
</script>